Abstract
Young albino rabbits were administered 5, 10, 20, and 50 mg of sodium fluoride/kg body weight/day subcutaneously for 3.5 months. The control animals were given 1 mL of double distilled water/kg body weight/day. In the fluoridated rabbits, the myocardium showed cloudy swellings, sarcoplasmic vacuolization, and small hemorrhages followed by fibrous necrosis. The degenerative changes were most pronounced in animals treated with 50 mg of sodium fluoride/kg body weight/day. The myocardium exhibited fibrous necrosis, dissolution of nuclei, fibrillolysis, extensive vacuole formation and interstitial cells in the connective tissue. The degree of myocardial damage seemed to be directly proportional to the dosage of fluoride administered. In the control animals, the myocardium showed normal structure without any of the changes mentioned above.
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Changes of the heart muscle due to chronic fluorosis. Part 2: Experimental studies on the effects of sodium fluoride upon the heart muscle of rabbits
In the electrocardiogram of rabbits given sodium fluoride orally, a pattern of myocardial damage was observed, namely depressed ST, inverted T, prolonged QT interval, multifocal ventricular premature contraction, bundle branch block, and pulmonary P. Histologically, regressive degeneration, cellular infiltration, hyperemia, hemorrhages and thickening of vessel wall were noted in the
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ITRAQ-based proteomics reveals the potential mechanism of fluoride-induced myocardial contraction function damage.
Highlights Pressure-volume loop analysis highlighted the impaired effects of fluoride exposure on cardiac function and myocardial contraction indicators. Histological analysis of rat heart tissue under fluoride exposure revealed extensive damage. Proteomics analysis highlighted effects on the myocardial contraction pathway. Protein network analysis highlighted the key roles of RyRs, Tpm and
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Effects of chronic ingestion of sodium fluoride on myocardium in a second generation of rats
Possible effects of long term exposure (6 months) to sodium fluoride (NaF) through drinking water on the morphology and biochemistry of myocardial tissue in second generation adult male rats were investigated. Wistar strain female and male rats were reared until the second generation of rats obtained, during which they were
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Aortic calcification in chronic fluoride poisoning: biochemical and electronmicroscopic evidence
Fluoride is known to cause ectopic calcification. The biochemical mechanism(s) involved in the initiation of calcification is not understood and the accompanying ultrastructural changes remain to be elucidated. Therefore, certain relevant parameters have been investigated in the aorta of rabbits administered fluoride, 10 mg NaF/kg body wt, every 24 hr
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Epigallocatechin gallate potentially attenuates fluoride induced oxidative stress mediated cardiotoxicity and dyslipidemia in rats
The present study was undertaken to evaluate the cardioprotective role of (-)-epigallocatechin-gallate (EGCG) against Fluoride (F) induced oxidative stress mediated cardiotoxicity in rats. The animals exposed to F as sodium Fluoride (NaF) (25mg/kg BW) for 4 weeks exhibited a significant increase in the levels of cardiac troponins T and I
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Fluoride & Arterial Calcification
The major change involved with cardiovascular disease is development of atherosclerosis in critical arteries, which is partially characterized by vascular calcification. The level of coronary artery calcification is thought to be the most important indicator of future cardiovascular events. Increased arterial calcifications have frequently been reported in those with skeletal fluorosis
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Fluoride, Blood Pressure and Hypertension
Individuals with blood pressure readings that exceed 140/90 are considered hypertensive. Hypertension can increase the risk of stroke, heart attack, heart failure, aortic aneurysms, and peripheral arterial disease. An association between increased fluoride in ground water and increased prevalence of hypertension has been observed, especially among adult males (Amini et
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Fluoride & Electrocardiogram Abnormalities
An electrocardiogram (ECG) is a diagnostic test that measures the electrical activity of the heart. An ECG can reveal heart rate, heart rhythym (i.e. steady or irregular), and the strength and timing of the heart’s natural electrical signals. ECGs are described in terms of “waves” (e.g. amplitude and duration). Problems
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Fluoride & Arteriosclerosis
Healthy arteries are flexible and elastic, allowing efficient transfer of blood and nutrients from the heart to the rest of the body. Arteriosclerosis refers to a stiffening of the arteries, including loss of elasticity. This is a slow, progressive disease that may begin early in life from damage to the
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Fluoride & Myocardial Damage
Structural damage to the heart resulting from fluoride toxicity has been observed in numerous human and animal studies. The general features of this damage include cloudy swelling, vacuolization or vacuolar degeneration, hemorrhages, interstitial edema, fibrous necrosis, dissolution of nuclei, and thickening of the vessel walls in the heart muscle (Basha
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